Pneumatic Diaphragm Valve

Structure and Material

The sanitary grade forged ball valve consists of a valve body, a ball core, a valve stem, a sealing component, and an actuator. Its modular design facilitates quick maintenance.

1. Valve body forging processMade of 316L stainless steel forgings, the grain structure is refined through high-temperature forging to improve material density. The compressive strength is increased by more than 30% compared to cast valve bodies, and the working pressure can reach 2.5-6.4MPa. It is suitable for high-pressure steam sterilization (SIP) or low-temperature liquid medium (-196 ℃) transportation.

2. runner designFull bore structure, with inner walls electrolytic polished to Ra ≤ 0.4 μ m mirror level, seamless, in compliance with 3A and EHEDG hygiene certifications, eliminating the risk of microbial growth.

3. sealed systemThe surface of the ball core is plated with hard chromium or sprayed with PTFE/ceramic coating, matched with food grade EPDM, FKM or PTFE sealing rings to achieve bi-directional zero leakage (sealing level VI), with a temperature tolerance range of -50 ℃~180 ℃, suitable for strong acids, alkalis and CIP/SIP cleaning agents.

4. Drive TypeSupport manual, pneumatic or electric control, pneumatic actuator response time ≤ 0.3 seconds, integrated position feedback signal, seamless integration with automated production lines.

Core strengths

1. High strength and pressure resistanceForged valve body has strong impact resistance and high pressure resistance, suitable for high-pressure sterilization, ultra-low temperature liquid nitrogen transportation and other working conditions.

2. No retention hygieneThe mirror channel and full bore design ensure zero residue of the medium, meeting FDA, GMP, and ISO 2852 standards, and are suitable for sterile filling and high-purity drug delivery.

3. Long life seal: Metal+elastomer composite sealing structure, excellent wear resistance and aging resistance, more than 100000 times of opening and closing life, and 50% reduction in maintenance cost.

4. Quick response and energy savingThe low friction ball core design reduces operating torque by 35% and air consumption by 20% for pneumatic models, making it suitable for energy-saving production systems.

5. Diversified adaptationWe provide connection methods such as Tri Clamp, flanges, and threads, with diameters covering DN10-DN100 (1/2 '-4'), and can customize explosion-proof, vacuum, or ultra-low temperature special models.

Application scenarios

• Food and beverage industryHigh pressure homogenizer pipeline, liquid food high-temperature instantaneous sterilization (HTST) system.

• Pharmaceutical and BioengineeringControl of media for freeze-drying machines and bioreactors, and ultra-low temperature storage pipelines in vaccine production.

• fine chemicalsPackaging and measurement of highly corrosive raw materials (such as strong acids and organic solvents).

• semiconductor manufacturingClean transportation of ultrapure water and electronic grade chemical reagents to avoid particle contamination.

Selection and maintenance points

1. Selection parameters：

• Working condition requirementsSelect valve body material and sealing material based on medium temperature (high/low temperature), peak pressure, and corrosiveness.

• connection methodPriority should be given to quick installation of clamps in frequent cleaning scenarios, and flange connections are recommended for high-pressure fixed pipelines.

• certification standardExport products must comply with target market certifications (such as CE, ASME BPE, 3A).

2. Installation and maintenance：

• Before installation, rinse the flow channel with pure water to avoid damage to the sealing surface caused by welding slag.

• Regularly check the elasticity of the sealing ring (recommended once a year), and shorten the high-temperature working conditions to six months.

• CIP cleaning temperature ≤ 150 ℃ to avoid material deformation caused by sudden temperature differences.

3. Fault handling：

• internal leakageCheck the wear of the core coating or aging of the sealing ring, and replace it in a timely manner.

• High operational resistanceClean the impurities on the valve stem or add food grade lubricating grease.